Lever for track scales



Dec. 19, 1933. A. BOUSFIELD LEVER FOR TRACK SCALES Filed May 25, 1931INVENTOR Alfred Bousfiehl ATTORNEY Patented Dec. 19, 1933 LEVER FORTRACK SCALES Alfred Bousfield, St. Johnsbury, Vt., assignor to E. and T.Fairbanks and Company, St. Johnsbury,;Vt., a corporation of VermontApplication May 25, 1931. Serial No. 539,892

14 Claims. (01. 265- 71) The present invention relates to improvementsin weighing scale levers, particularly to longitudinal extension leversfor track scales.

This invention is broadly disclosed in my copending application SerialNo. 384,057, Track scales, filed Aug. 7, 1929.

In track scales the levers are necessarily subjected to heavy loads andstresses, when weighing operations are being performed and the leversconsequently are heavily and ru'ggedly built in order to properlywithstand the use for which they are designed.

Therefore, an important object of the invention is to provide anefiicient, built up lever of girder or I-beam construction adapted tocarry the lever fulcrum and loadsupports and provided with openings inthe body and butt end of theweb, in which are mounted a lever fulseatedtherein and supporting a plate-fulcrum.

Another object is to provide the lever with reinforcing means at certainbearing points where stress or load is applied, such as under the loadpivot block.

Another object is to provide similar reinforcing means in the buttend'of the lever above the fulcrum bearing block. I

Another object is to provide reinforcing means on each side of the webof the girder beam above the lever fulcrum block and below the loadhearing block, so as to compensate for any possible weakening of theadjacent metal due to cutting openings in the web for holding thesupport blocks. Still another object is to provide thetip end of thelever with an extension nose iron adapted to carry a plate-fulcrummounted in a block carried thereby.

In order that the nature of my invention may be fully understood, I haveillustrated certain embodiments of the invention in the accompanyingdrawing, in which,

Figure 1 is a longitudinal elevation of a lever, 4 broken away in itscenter section, showing a preferred form of my invention.

Figure 2 is an end view on the lines 2--2 of Fig. 1 showing the fulcrumend of the lever with the plate fulcrum and its supporting block. IFigure 3 is a vertical cross section on the line 3- 3 of Figure 1showing the load receiving section of the lever with the plate-fulcrummounted in its block and reinforcing plates onthe girder beam flanges.Figure 4 is a vertical cross section on the line crum block and a loadbearing block, each having 44 of Fig. 1 showing the nose iron attachedto the web of the girder beam forming the lever.

Referring to the drawing 1 designates a lever formed of a girder orI-b'eam 2, provided with an opening 3, preferably rectangular, in theweb4 'at the butt end of the lever. Adjacent to the opening 3 the web 4 isprovided with a similar rectangular opening 5 located in a substantiallycentral position therein.

Above the opening 3 on each side of the web 4 is riveted and welded aninverted L-shaped angle-iron or support 6 with its flange 7 in line withthe upper edge 8 of the opening 3 and having its upper edge 9 joined bya welded metal flller 10 to the upper flange 11 of the girder beam 2. Avertical plate 12 is mounted in the center of each angle-iron 6 and iswelded to the web of the angle-iron between the flange '7 of theangle-iron and the upper flange 11 of the girder beam. 7

Seatedin a' reduced .portion- 13 of .the opening 3 and disposedtransversely of the girder beam 2 is a lever fulcrum block 14, which isfirst adjusted to its proper operative position and held therein bybolts 15, secured to the flanges '7 and then welded to the flanges andthe web 4. The lever fulcrum block 14 thus forms a fulcrum plate supportfor a plate fulcrum 16 secured by bolts to the block at the fulcrumpoint of the lever.

In a similar manner an inverted L-shaped angle-iron or support 17 isriveted and welded on each side of the web 4 below the opening 5'havingits flange 18 flush withthe lower edge 19 of the opening 5, while thelower edge of the angleiron is joined by a welded metal filler .20 tothe lower flange 21 of the girder beam. .Disposed in the centerof 'eachangle-iron 17 is a vertical plate 22, which is welded to the web of'theangleiron between its flange 18 and the lower flange of the girder beam.

A load bearing block 23 is mountedtransversely of the girder beam 2 inthe opening 5 and is supported on the flanges 18 of the opposedangle-irons 17, on which the block 23 is initially adjusted to itsproper position and then fastened thereto by bolts 24, after which it iswelded to the flanges and the web 4. A plate-fulcrum 25 is fastened bybolts to the load bearing block 23, which thus serves as a supporttherefor.

Attached to the upper flange 11 and the lower flange 21 of the girderbeam 2 are reinforcing plates 26 and 2'7 respectively, which are'rivetedand welded to the flanges 11 and 21, in a position above and below theload bearing block 23, each plate being disposed with its center invertical alignment with the center of the plated'ulcrum carried by theload bearing block 23. A longitudinally extending nose iron 28, formedof opposed angle-irons 29, riveted and welded to the upper part of theweb 4 at the tip end of the girder beam 2, carries at its free end onthe under side a bracket 29a provided with an adjusting screw 2% adaptedto co-act with and move to the proper position a bearing block 30slidably mounted on the angle-irons 29, in which bearing block there ismounted a plate-fulcrum 31 operatively connected to the transverseextension lever of the scale, not shown. An inclined edge 32 on thelower part of the tip end of the girder beam affords clearance for thelever as it moves under influence of the load.

While I have shown a preferred embodiment of my invention it is evidentthat modifications of the invention may be made that will come withinthe scope of the invention and, therefore, I do not desire to limit theinvention to the exact form of construction shown and described herein.

I claim:--

1. A lever for track scales formed of a girder beam and having openingsin its web, and reinforcing means adjacent to one end of each opening,supporting a lever fulcrum support and a load support, the saidreinforcing means comprising angle-supports attached to the oppositeside of the girder beam Web and supported on the flange of the girderbeam.

2. A lever for track scales formed of a girder beam and having openingsin its web, and reinforcing means adjacent to one end of each opening,supporting a lever fulcrum support and a load support, comprisinginverted L-shaped angle-supports secured to the opposite sidesof thegirder beam web and supported on the flange of the girder beam.

3. A lever for track scales formed of a girder beam and having openingsin its web, and reinforcing means adjacent to one end of each opening,supporting a lever fulcrum support and a load support, and comprisinginverted L-shaped angle-supports secured to the opposite sides of thegirder beam web and provided below with a vertical centrally disposedplate secured to the said girder beam web. 1

4. A lever for track scales formed of a girder beam and having in itsweb openings, in which are mounted a lever fulcrum support and a loadsupport, and reinforcing means secured to the upper and lower flanges ofthe girder beam in a position above and below the said lever fulcrum andload supports respectively.

5. A lever for track scales formed of a girder beam and having openingsin its web at the butt end and in a substantially central positionrespeotively, a lever fulcrum support and a load support mounted in itsrespective opening, inverted L-shaped opposed angle-supports mounted onthe web of the girder beam below an end of each opening, and a leverfulcrum support and a load support mounted in its respective opening andwelded to the said web and angle-supports.

6. A lever for track scales formed of a girder beam and having openingsin its web at the butt end and in a substantially central positionrespectively, a lever fulcrum support and a load support mounted in itsrespective opening, each transversely disposed in its respective openingand reinforcing plates attached to the upper and lower flanges of thesaid girder beam and disposed above and below the said load support,

7. A lever for track scales formed of a girder beam and having openingsin its web, and a lever fulcrum support and a load support mounted inits respective opening, each comprising an angleiron welded to the weband provided with a vertical, centrally disposed plate welded to theangle-iron and the adjacent flange of the girder beam.

8. A lever for track scales formed of a girder beam and having openingsin its web, a lever fulcrum support and a load support mounted in itsrespective opening, each comprising an angle-iron welded to the web andprovided with a vertical, centrally disposed plate welded to theangle-iron and the adjacent flange of the girder beam, and a weldedmetal filler joining the edge of each angle-iron to the adjacent flangeof the girder beam.

9. A lever for track scales formed of a girder beam and having in itsweb openings, in which are mounted a lever fulcrum support and a loadsupport, a plate-fulcrum mounted in the said load support, and areinforcing means secured respectively to the upper and lower flanges ofthe girder beam in a position above and below '100 the said load supportand disposed with its center in vertical alignment with the center ofthe platefulcrum carried by the said load support.

10. A lever for track scales formed of a girder beam and having in itsweb openings, in which are mounted a lever fulcrum support and a loadsupport, a plate-fulcrum mounted in each of said lever fulcrum and loadsupports, and a reinforcing plate secured and welded respectively to theupper and lower flanges of the girder beam at a point above and belowthe said load support and having its center in vertical alignment withthe center of the plate-fulcrum carried by each of the said leverfulcrum and load supports.

11. A. lever for track scales formed of a girder 118 beam, alongitudinally extending nose iron disposed at the tip end of the saidgirder beam and formed of opposed angle irons secured and welded to theupper part of the web of the girder beam, a bearing block mounted on theunder side 120 of the said angle irons and having a plate-fulcrumfastened thereto, and a bracket secured to the under side of theangle-irons carrying adjustable means co-operating with the said bearingblock and adapted to move the said bearing block and its plate fulcrumto the proper position.

12. A lever for track scales formed of a girder beam and having openingsin its web, a lever fulcrum support and a load support mounted in itsrespective opening, and reinforcing means for 6 the said supportscentrally and vertically disposed in relation thereto and supported oneach flange of the girder beam.

13. A lever for track scales formed of a girder beam and having openingsin its web, a lever \35 fulcrum support and a load support mounted inits respective opening, and reinforcing means for the said supportscomprising opposed angleirons welded to the web of the girder beam,centrally and vertically disposed in relation thereto and supported oneach flange of the girder beam.

14. A lever for track scales formed of a girder beam and having openingsin its web, a lever fulcrum support and a load support mounted in itsrespective opening, plate-fulcrums secured to the lever fulcrum supportand the load support, and reinforcing means for the said supportscentrally and vertically disposed in relation thereto and supported oneach flange of the girder beam.

ALFRED BOUSF'IELD.

